WO2022188659A1

WO2022188659A1 - Communication method and communication apparatus

Info

Publication number: WO2022188659A1
Application number: PCT/CN2022/078559
Authority: WO
Inventors: 王坚; 张公正; 李榕; 王俊; 童文
Original assignee: 华为技术有限公司
Priority date: 2021-03-09
Filing date: 2022-03-01
Publication date: 2022-09-15
Also published as: CN115051898A; US20230421417A1; EP4297495A1

Abstract

Disclosed in embodiments of the present application are a communication method and a communication apparatus, for use in reducing, by using a frequency domain spectral shaping (FDSS) waveform processing mode, the PAPR of a signal transmitted by a transmitting device, and reducing the decoding power consumption of a receiving device by using a polar code encoding mode, thereby improving communication energy efficiency. The method comprises: a transmitting device performs FDSS processing on a first signal to obtain a second signal, the first signal being a signal obtained by performing polar code encoding according to a modulation and encoding solution; then the transmitting device transmits a target signal to a receiving device, the target signal being a signal obtained on the basis of the second signal.

Description

A communication method and communication device

This application claims the priority of the Chinese patent application with the application number of 202110254900.9 and the invention titled "a communication method and communication device" filed with the China Patent Office on March 09, 2021, the entire contents of which are incorporated into this application by reference .

technical field

The present application relates to the field of communication, and in particular, to a communication method and a communication device.

Background technique

Wireless communication refers to the transmission communication between multiple communication nodes that is not propagated through conductors or cables. Generally, a communication method whose communication distance is within hundreds of meters (or tens of meters) can be called short-range communication.

At present, in short-distance communication, the communication distance between the sending device and the receiving device is short, and higher frequency band signals can be used for communication, and the higher frequency band can provide a wider system bandwidth, and it is easy to achieve large Signal transmission and reception of power to improve the throughput rate of the communication system.

However, it is easy to increase the power consumption of the transmitting device and the receiving device while increasing the throughput rate. Therefore, how to realize a short-range wireless communication technology with low power consumption is an urgent technical problem to be solved.

SUMMARY OF THE INVENTION

Embodiments of the present application provide a communication method and apparatus for reducing the peak-to-average power ratio (peak-to-average power ratio) of a signal sent by a signal sending device by using a frequency domain spectral shaping (FDSS) waveform processing method , PAPR), and uses the polar code (Polar) coding method to reduce the decoding power consumption of the receiving device, thereby improving the communication energy efficiency.

A first aspect of the embodiments of the present application provides a communication method, which is applied to a first communication apparatus as a sending device. Specifically, the method may be executed by a terminal device (or network device), or may be executed by a terminal device (or a terminal device (or a network device). or network equipment) components (such as processors, chips, or systems on a chip, etc.). Wherein, the working frequency band of the first communication device is between 30 GHz and 300 GHz, wherein this frequency band may also be referred to as a millimeter wave frequency band, or an extremely high frequency (extremely high frequency, EHF) frequency band. In this method, a first communication device as a transmitting device first performs frequency domain spectrum shaping FDSS processing on a first signal to obtain a second signal, where the first signal is a signal obtained by polar code encoding according to a modulation and coding scheme and then, the first communication device sends the target signal to another communication device (eg, a second communication device) serving as a receiving device, wherein the target signal is a signal obtained based on the second signal.

Based on the above technical solution, the sending device performs FDSS processing on the first signal obtained by performing Polar code encoding according to the modulation and coding scheme to obtain a second signal, and sends the target signal obtained based on the second signal to the receiving device. Wherein, in this communication method, on the one hand, the second signal is obtained by using FDSS waveform processing, which can reduce the PAPR of the target signal sent by the sending device, thereby reducing the cost and power consumption of the transmitter; on the other hand, using polar coding coding Compared with the traditional low density parity code (low density parity code, LDPC) encoding method, the high power consumption in the decoding process can reduce the decoding power consumption of the receiving device of the target signal , to improve communication energy efficiency.

In a possible implementation manner of the first aspect of the embodiment of the present application, the first communication apparatus as the sending device performs frequency domain spectrum shaping FDSS processing on the first signal, and obtaining the second signal includes: the first communication apparatus The first signal is subjected to discrete Fourier transform (discrete fourier transform, DFT) processing to obtain a third signal; then, the first communication device performs filtering processing on the third signal to obtain the second signal.

Based on the above technical solutions, the DFT processing is used to transform the time domain signal to obtain the frequency domain signal. In the process of performing the FDSS processing on the first signal, the transmitting device may first perform DFT processing on the first signal to obtain the third signal, and then The third signal is then filtered to obtain a second signal after spectrum spread.

It should be noted that, as a special implementation form of DFT, fast Fourier transform (fast fourier transform, FFT) is a fast algorithm for implementing DFT, and therefore, the above DFT processing process can also be implemented through FFT processing.

In a possible implementation manner of the first aspect of the embodiment of the present application, the third signal is a signal obtained by processing based on the number of first DFT points, and the target signal is a discrete Fourier process of the second signal based on the number of second DFT points The signal obtained by inverse discrete fourier transform (IDFT) processing.

Based on the above technical solutions, IDFT processing is used to transform the frequency domain signal to obtain a time domain signal, the third signal may be a signal obtained by performing DFT processing on the first signal based on the number of first DFT points, and the target signal may be based on the first DFT point. A signal obtained by performing IDFT processing on the second signal with two DFT points. When the first DFT point is less than the second IDFT point, the second signal can be spread spectrum, so as to achieve FDSS processing to obtain a target signal with lower PAPR.

It should be noted that the target signal is a signal obtained by at least performing inverse Fourier transform IDFT processing on the second signal based on the number of second DFT points, and other processing procedures, such as adding a cyclic prefix (CP), may also be performed. ), parallel-serial conversion (P/S), or other processing processes, which are not limited here.

Similarly, as a special implementation form of IDFT, inverse fast fourier transform (IFFT) is a fast algorithm for implementing IDFT, and the above IDFT processing process can also be implemented through the IFFT processing process.

In a possible implementation manner of the first aspect of the embodiment of the present application, a numerical ratio of the number of the first DFT points to the number of the second DFT points is 2 to 3.

Based on the above technical solution, since the numerical ratio of the number of the first DFT points to the number of the second DFT points is 2 to 3, it can be concluded that the alpha value of the filter used to implement the filtering process can be up to 0.5. The alpha value of the filter is used to limit the design of the filter. For example, when a root raised cosine filter is used, the alpha value is its roll-off factor. According to the alpha value, the filter design required by the sending device can be easily guided. device.

Optionally, when the numerical ratio of the first DFT points to the second DFT points is 2 to 3, the value of the first DFT points may be 512, and the value of the second DFT points may be 768; or, the first DFT points may be 512. The value may be 1024, and the value of the second DFT points may be 1536; or other value combinations, which are not limited here.

In a possible implementation manner of the first aspect of the embodiment of the present application, a numerical ratio of the number of the first DFT points to the number of the second DFT points is 4 to 5.

Based on the above technical solution, since the numerical ratio of the first DFT points to the second DFT points is 4 to 5, it can be concluded that the alpha value of the filter used for filtering processing can be up to 0.25. The alpha value of the filter is used to limit the design of the filter. For example, when a root raised cosine filter is used, the alpha value is its roll-off factor. According to the alpha value, the filter design required by the sending device can be easily guided. device.

Optionally, when the numerical ratio of the first DFT points to the second DFT points is 4 to 5, the value of the first DFT points may be 512, and the value of the second DFT points may be 640; or, the first DFT points may be 512. The value may be 1024, and the value of the second DFT points may be 1280; or other value combinations, which are not limited here.

In a possible implementation manner of the first aspect of the embodiment of the present application, the sampling rate (or referred to as the baseband sampling rate) of the baseband signal of the first communication device is a positive integer multiple of 30.72 MHz.

Based on the above technical solution, in order to support the normal operation of the first communication device in other communication systems (communication systems with a limited baseband signal sampling rate of 30.72 MHz), the baseband signal sampling rate of the first communication device may be set to 30.72 A positive integer multiple of MHz, so as to improve the compatibility of the first communication device in different communication systems, and it can also be flexibly configured according to the system bandwidth of the communication system, so as to further improve the communication energy efficiency.

It should be noted that the sampling rate of the baseband signal of the first communication device is a positive integer multiple of 30.72 MHz. For example, when the system bandwidth is 2.5 GHz, the value of the positive integer multiple may be 8, that is, 2.4576 GHz; or Yes, when the system bandwidth is 5.0GHz, the value of the positive integer multiple can be 16, that is, 4.9152GHz; or, when the system bandwidth is 7.5GHz, the value of the positive integer multiple can be 24, that is, 7.3728GHz ; Or, when the system bandwidth is 10.0 GHz, the value of the positive integer multiple can be 32, that is, 9.8304 GHz; or other values, which are not limited here. That is, different multiples of positive integer multiples of 30.72 MHz are selected in different system bandwidths, so that on the premise of improving the compatibility of the first communication device in different communication systems, the spectrum utilization of the communication system where the first communication device is located is improved. Rate.

In a possible implementation manner of the first aspect of the embodiment of the present application,

The code rate of the modulation and coding scheme includes at least 15/16.

Based on the above technical solutions, the first signal is a signal obtained by performing polar coding according to the modulation and coding scheme, that is, the transmitting device performs polar coding on the bit information to be transmitted according to the modulation and coding scheme to obtain the first signal. Specifically, the modulation and coding scheme A number of configuration information may be included, and any one of the configuration information includes at least a code rate, wherein, when the code rate of the modulation and coding scheme includes 15/16, compared with the operating frequency band between 30 GHz and 300 GHz Other code rates (such as 1/2, 3/4, 7/8, etc.) commonly used in this scenario are implemented. Using a higher code rate can achieve a higher throughput rate to meet the requirements of short-range wireless communication technology. high throughput requirements.

Optionally, the code rate of the modulation and coding scheme may further include one or more of 1/2, 3/4, 5/8, 7/8, and 13/16.

It should be noted that the modulation and coding scheme can be implemented in various forms such as text, tables, schematic diagrams, etc., which are not limited here. For example, when the modulation and coding scheme is implemented by a table, it may be a modulation and coding scheme (MCS) table.

The modulation mode of the modulation and coding scheme includes at least an 8th-order quadrature amplitude modulation (quadrature amplitude modulation, QAM), where the 8th-order QAM may also be referred to as 8QAM.

Based on the above technical solutions, the first signal is a signal obtained by performing polar coding according to the modulation and coding scheme, that is, the transmitting device performs polar coding on the bit information to be transmitted according to the modulation and coding scheme to obtain the first signal. Specifically, the modulation and coding scheme It may contain a plurality of configuration information, and any one of the configuration information includes at least a modulation mode, wherein, when the modulation mode of the modulation and coding scheme includes 8QAM, compared with the operating frequency band between 30 GHz and 300 GHz. Other modulation methods commonly used in the scene (such as quadrature phase shift keying (Quadrature Phase Shift Keying, QPSK) corresponding to low spectral efficiency to 16-order QAM corresponding to high spectral efficiency corresponding to a large span, etc.), using the 8QAM modulation method can The spectral efficiency of the first communication device is smoothly transitioned from the modulation mode with low spectral efficiency to the modulation mode with high spectral efficiency, and the throughput performance of the communication system is improved.

Optionally, the code rate of the modulation and coding scheme may further include one or more of binary phase shift keying (BPSK), QPSK, and 16QAM.

In a possible implementation manner of the first aspect of the embodiment of the present application, the subcarrier spacing of the target signal is a positive integer multiple of 1.6 MHz or a positive integer multiple of 1.92 MHz.

Based on the above technical solutions, the first communication device as the sending device can flexibly select subcarrier intervals according to different communication scenarios when transmitting the target signal. For example, when the system phase noise is large, a larger subcarrier interval can be used to improve the Resistance to phase noise; when multipath interference is strong, a smaller subcarrier spacing can be used to increase the CP length, thereby reducing inter-symbol interference and inter-carrier interference, and improving communication energy efficiency.

In a possible implementation manner of the first aspect of the embodiment of the present application, the target signal further includes a cyclic prefix CP, and the time length of the CP includes at least one of the following:

26.04ns ns, 104.16ns, 52.08ns, 208.32ns.

Based on the above technical solution, the first communication device as the sending device can flexibly select the time length of the CP according to different communication scenarios when sending the target signal. Increase the bandwidth of the data part; when the multipath interference is strong, a larger CP length can be used, thereby reducing the inter-symbol interference and inter-carrier interference, and improving the communication energy efficiency.

A second aspect of the embodiments of the present application provides a communication method, which is applied to a second communication apparatus serving as a receiving device. Specifically, the method may be executed by a terminal device (or network device), or may be executed by a terminal device (or a terminal device (or a network device). or network equipment) components (such as processors, chips, or systems on a chip, etc.). Wherein, the working frequency band of the second communication device is between 30 GHz and 300 GHz, where this frequency band may also be referred to as a millimeter wave frequency band, or an extremely high frequency (extremely high frequency, EHF) frequency band. In this method, a second communication device serving as a receiving device acquires a target signal, and the target signal is used to determine a fourth signal; then, the second communication device performs FDSS inverse processing on the fourth signal to obtain a fifth signal, wherein , the fifth signal is used for polar decoding according to the modulation and coding scheme.

Based on the above technical solution, the receiving device determines the fourth signal according to the obtained target signal, and performs FDSS inverse processing on the fourth signal to obtain the fifth signal for polar decoding according to the modulation and coding scheme. Wherein, in the communication method, on the one hand, the fifth signal is obtained by inverse processing of the FDSS waveform, which can reduce the PAPR of the target signal sent by the sending device, thereby reducing the cost and power consumption of the transmitter; on the other hand, the fifth signal It is used for decoding using the polar encoding decoding method. Compared with the high power consumption of the traditional low density parity code (LDPC) encoding in the decoding process, the decoding of the receiving device can be reduced. power consumption and improve communication energy efficiency.

In a possible implementation manner of the second aspect of the embodiment of the present application, the second communication apparatus performs FDSS inverse processing on the fourth signal, and the process of obtaining the fifth signal may specifically include: a first communication apparatus serving as a receiving device First, filter the fourth signal to obtain a sixth signal; then, the second communication device performs IDFT processing on the sixth signal to obtain the fifth signal.

Based on the above technical solutions, after the second communication device as the receiving device obtains the target signal, it can implement different FDSS inverse processing according to different filters in the second communication device. Wherein, when the target signal from the sending device is filtered using a root-raised cosine (RRC) filter, the receiving device needs to perform filtering in the process of inversely processing the fourth signal determined by the target signal. , and perform IDFT processing after filtering processing to obtain the fifth signal, wherein the IDFT processing is used to transform the frequency domain signal to obtain a time domain signal, so that the fifth signal can be subsequently demodulated by symbols to obtain corresponding bit information.

In a possible implementation manner of the second aspect of the embodiment of the present application, the second communication device performs FDSS inverse processing on the fourth signal, and the process of obtaining the fifth signal may specifically include: the second communication device performs FDSS inverse processing on the fourth signal. The fourth signal is subjected to IDFT processing to obtain the fifth signal.

Based on the above technical solutions, after the second communication device as the receiving device obtains the target signal, it can implement different FDSS inverse processing according to different filters in the second communication device. Wherein, when the target signal from the sending device is filtered using a raised cosine (RC) filter, the receiving device may not need to perform filtering in the process of inversely processing the fourth signal determined by the target signal, That is, the fourth signal is directly subjected to IDFT processing to obtain the fifth signal, wherein the IDFT processing is used to transform the frequency domain signal to obtain a time domain signal, so that the fifth signal can be subsequently demodulated through symbols to obtain corresponding bit information .

It should be noted that, as a special implementation form of IDFT, inverse fast fourier transform (IFFT) is a fast algorithm for implementing IDFT, and the above IDFT processing process can also be implemented through the IFFT processing process.

In a possible implementation manner of the second aspect of the embodiment of the present application, the fifth signal is a signal obtained by processing based on the first DFT point number, and the fourth signal is obtained by performing DFT processing on the target signal based on the second DFT point number signal of.

Based on the above technical solution, the fifth signal may specifically be a time-domain signal obtained by performing IDFT processing on the sixth signal based on the number of first DFT points and used for polar decoding according to the modulation and coding scheme. In addition, the DFT processing is used to transform the time-domain signal to obtain a frequency-domain signal, that is, the fourth signal may be a frequency-domain signal obtained by performing DFT processing on the target signal based on the number of second DFT points.

It should be noted that the target signal is used to determine the fourth signal, which may specifically instruct the second communication device to determine the fourth signal by using the target signal. The specific determination process may be to perform DFT processing on the target signal at least based on the number of second DFT points. The obtained signal may also undergo other processing procedures, such as serial-to-parallel conversion (S/P), removal of cyclic prefix (cyclic prefix, CP), or other processing procedures, which are not limited here.

Similarly, as a special implementation form of DFT, fast Fourier transform (fast fourier transform, FFT) is a fast algorithm for realizing DFT, therefore, the above-mentioned DFT processing process can also be implemented by FFT processing process.

In a possible implementation manner of the second aspect of the embodiment of the present application, a numerical ratio of the number of the first DFT points to the number of the second DFT points is 2 to 3.

In a possible implementation manner of the second aspect of the embodiment of the present application, a numerical ratio of the number of the first DFT points to the number of the second DFT points is 4 to 5.

In a possible implementation manner of the second aspect of the embodiment of the present application, the sampling rate of the baseband signal of the second communication device is a positive integer multiple of 30.72 MHz.

Based on the above technical solution, in order to support the normal operation of the second communication device in other communication systems (communication systems with a limited baseband signal sampling rate of 30.72MHz), the baseband signal sampling rate of the second communication device may be set to 30.72 A positive integer multiple of MHz, so as to improve the compatibility of the second communication device in different communication systems, and it can also be flexibly configured according to the system bandwidth of the communication system, so as to further improve the communication energy efficiency.

It should be noted that the sampling rate of the baseband signal of the second communication device is a positive integer multiple of 30.72 MHz. For example, when the system bandwidth is 2.5 GHz, the value of the positive integer multiple may be 8, that is, 2.4576 GHz; or Yes, when the system bandwidth is 5.0GHz, the value of the positive integer multiple can be 16, that is, 4.9152GHz; or, when the system bandwidth is 7.5GHz, the value of the positive integer multiple can be 24, that is, 7.3728GHz ; Or, when the system bandwidth is 10.0 GHz, the value of the positive integer multiple can be 32, that is, 9.8304 GHz; or other values, which are not limited here. That is, different multiples of positive integer multiples of 30.72 MHz are selected in different system bandwidths, so that on the premise of improving the compatibility of the first communication device in different communication systems, the spectrum utilization of the communication system where the first communication device is located is improved. Rate.

In a possible implementation manner of the second aspect of the embodiment of the present application,

The code rate of the modulation and coding scheme includes at least 15/16.

Based on the above technical solution, the fifth signal is used for polar decoding according to the modulation and coding scheme, that is, the receiving device can perform polar coding on the fifth signal according to the modulation and coding scheme to obtain corresponding bit information. Specifically, the modulation and coding scheme can be Contains a number of configuration information, and any one of the configuration information includes at least a code rate, wherein, when the code rate of the modulation and coding scheme includes 15/16, compared with the operating frequency band between 30 GHz and 300 GHz. Other code rates (such as 1/2, 3/4, 7/8, etc.) commonly used in a scenario can be implemented. Using a higher code rate can achieve a higher throughput rate to meet the high requirements of short-range wireless communication technology. throughput requirements.

Based on the above technical solution, the fifth signal is used for polar decoding according to the modulation and coding scheme, that is, the receiving device performs polar coding on the fifth signal according to the modulation and coding scheme to obtain corresponding bit information. Specifically, the modulation and coding scheme may include There are multiple pieces of configuration information, and any one of the configuration information includes at least a modulation mode, wherein, when the modulation mode of the modulation and coding scheme includes 8QAM, compared with the scenario where the working frequency band is between 30 GHz and 300 GHz Other commonly used modulation methods (such as quadrature phase shift keying (Quadrature Phase Shift Keying, QPSK) corresponding to low spectral efficiency to 16-order QAM corresponding to high spectral efficiency corresponding to a large span, etc.), the use of 8QAM modulation method can make the first The spectral efficiency of the second communication device smoothly transitions from the modulation mode of low spectral efficiency to the modulation mode of high spectral efficiency, which improves the throughput performance of the communication system.

In a possible implementation manner of the second aspect of the embodiment of the present application, the subcarrier spacing of the target signal is a positive integer multiple of 1.6 MHz or a positive integer multiple of 1.92 MHz.

Based on the above technical solutions, the second communication device as the receiving device can flexibly select subcarrier intervals according to different communication scenarios when receiving the target signal. For example, when the system phase noise is large, a larger subcarrier interval can be used to improve the Resistance to phase noise; when multipath interference is strong, a smaller subcarrier spacing can be used to increase the CP length, thereby reducing inter-symbol interference and inter-carrier interference, and improving communication energy efficiency.

In a possible implementation manner of the second aspect of the embodiment of the present application, the target signal further includes a cyclic prefix CP, and the time length of the CP includes at least one of the following:

26.04ns ns, 104.16ns, 52.08ns, 208.32ns.

Based on the above technical solution, the second communication device as the receiving device can flexibly select the time length of the CP according to different communication scenarios when sending the target signal. Increase the bandwidth of the data part; when the multipath interference is strong, a larger CP length can be used, thereby reducing the inter-symbol interference and inter-carrier interference, and improving the communication energy efficiency.

A third aspect of the embodiments of the present application provides a first communication device, where a working frequency band of the first communication device is between 30 GHz and 300 GHz, and the device includes:

a processing unit, configured to perform FDSS processing on the first signal to obtain a second signal, where the first signal is a signal obtained by polar coding according to a modulation and coding scheme;

The transceiver unit is used for sending a target signal, where the target signal is a signal obtained based on the second signal.

In a possible implementation manner of the third aspect of the embodiment of the present application, the processing unit is specifically configured to:

Perform discrete Fourier transform DFT processing on the first signal to obtain a third signal;

The third signal is filtered to obtain the second signal.

In a possible implementation manner of the third aspect of the embodiment of the present application, the third signal is a signal obtained by processing based on the number of first DFT points, and the target signal is obtained by performing IDFT processing on the second signal based on the number of second DFT points signal of.

In a possible implementation manner of the third aspect of the embodiment of the present application, the numerical ratio of the number of the first DFT points to the number of the second DFT points is 2 to 3.

In a possible implementation manner of the third aspect of the embodiment of the present application, a numerical ratio of the number of the first DFT points to the number of the second DFT points is 4 to 5.

In a possible implementation manner of the third aspect of the embodiment of the present application, the sampling rate of the baseband signal of the first communication device is a positive integer multiple of 30.72 MHz.

In a possible implementation manner of the third aspect of the embodiment of the present application,

The code rate of the modulation and coding scheme includes at least 15/16.

The modulation mode of the modulation and coding scheme includes at least 8th-order quadrature amplitude modulation.

In a possible implementation manner of the third aspect of the embodiment of the present application, the subcarrier spacing of the target signal is a positive integer multiple of 1.6 MHz or a positive integer multiple of 1.92 MHz.

In a possible implementation manner of the third aspect of the embodiment of the present application, the target signal further includes a cyclic prefix CP, and the time length of the CP includes at least one of the following:

26.04ns ns, 104.16ns, 52.08ns, 208.32ns.

In the third aspect of the embodiment of the present application, the component modules of the first communication device may also be used to execute the steps performed in each possible implementation manner of the first aspect. For details, refer to the first aspect, which will not be repeated here.

A fourth aspect of an embodiment of the present application provides a second communication device, where a working frequency band of the second communication device is between 30 GHz and 300 GHz, and the device includes:

a transceiver unit for acquiring a target signal, where the target signal is used to determine a fourth signal;

The processing unit is configured to perform FDSS inverse processing on the fourth signal to obtain a fifth signal, where the fifth signal is used for polar decoding according to the modulation and coding scheme.

In a possible implementation manner of the fourth aspect of the embodiment of the present application, the processing unit is specifically configured to:

filtering the fourth signal to obtain a sixth signal;

The sixth signal is subjected to IDFT processing to obtain the fifth signal.

The second communication device performs IDFT processing on the fourth signal to obtain the fifth signal.

In a possible implementation manner of the fourth aspect of the embodiment of the present application, the fifth signal is a signal obtained by processing based on the first DFT point number, and the fourth signal is obtained by performing DFT processing on the target signal with the second DFT point number Signal.

In a possible implementation manner of the fourth aspect of the embodiment of the present application, a numerical ratio of the number of the first DFT points to the number of the second DFT points is 2 to 3.

In a possible implementation manner of the fourth aspect of the embodiment of the present application, a numerical ratio of the number of the first DFT points to the number of the second DFT points is 4 to 5.

In a possible implementation manner of the fourth aspect of the embodiment of the present application, the sampling rate of the baseband signal of the second communication device is a positive integer multiple of 30.72 MHz.

In a possible implementation manner of the fourth aspect of the embodiment of the present application,

The code rate of the modulation and coding scheme includes at least 15/16.

In a possible implementation manner of the fourth aspect of the embodiment of the present application, the subcarrier spacing of the target signal is a positive integer multiple of 1.6 MHz or a positive integer multiple of 1.92 MHz.

In a possible implementation manner of the fourth aspect of the embodiment of the present application, the target signal further includes a cyclic prefix CP, and the time length of the CP includes at least one of the following:

26.04ns ns, 104.16ns, 52.08ns, 208.32ns.

In the fourth aspect of the embodiment of the present application, the component modules of the second communication device may also be used to execute the steps performed in each possible implementation manner of the second aspect. For details, refer to the second aspect, which will not be repeated here.

A fifth aspect of an embodiment of the present application provides a communication device, including at least one processor, the at least one processor is coupled to a memory;

the memory is used to store programs or instructions;

The at least one processor is configured to execute the program or instructions, so that the apparatus implements the method described in the first aspect or any possible implementation manner of the first aspect, or, enables the apparatus to implement the second aspect or the first aspect. The method described in any possible implementation manner of the second aspect.

A sixth aspect of the embodiments of the present application provides a first communication device, including at least one logic circuit and an input and output interface;

The input and output interface is used to output the target signal;

The logic circuit is configured to perform the method described in the first aspect or any one of the possible implementations of the first aspect.

A seventh aspect of the embodiments of the present application provides a second communication device, including at least one logic circuit and an input and output interface;

The input and output interface is used to input the target signal;

The logic circuit is configured to perform the method described in the second aspect or any one of the possible implementations of the second aspect.

An eighth aspect of the embodiments of the present application provides a computer-readable storage medium that stores one or more computer-executable instructions. When the computer-executable instructions are executed by a processor, the processor executes the first aspect or any one of the first aspects. a possible implementation of the method described.

A ninth aspect of the embodiments of the present application provides a computer-readable storage medium that stores one or more computer-executable instructions. When the computer-executable instructions are executed by a processor, the processor executes any one of the second aspect or the second aspect above. a possible implementation of the method described.

A tenth aspect of the embodiments of the present application provides a computer program product (or computer program) that stores one or more computers. When the computer program product is executed by the processor, the processor executes the first aspect or the first aspect A method of any possible implementation.

An eleventh aspect of the embodiments of the present application provides a computer program product that stores one or more computers. When the computer program product is executed by the processor, the processor may implement the second aspect or any one of the second aspects. way method.

A twelfth aspect of an embodiment of the present application provides a chip system, where the chip system includes at least one processor, configured to support the first communication device to implement the first aspect or any of the possible implementation manners of the first aspect. function.

In a possible design, the chip system may further include a memory for storing necessary program instructions and data of the first communication device. The chip system may be composed of chips, or may include chips and other discrete devices. Optionally, the chip system further includes an interface circuit, and the interface circuit provides program instructions and/or data for the at least one processor.

A thirteenth aspect of an embodiment of the present application provides a chip system, where the chip system includes at least one processor configured to support a second communication device to implement the second aspect or any of the possible implementation manners of the second aspect. function.

In a possible design, the chip system may further include a memory for storing necessary program instructions and data of the second communication device. The chip system may be composed of chips, or may include chips and other discrete devices. Optionally, the chip system further includes an interface circuit, and the interface circuit provides program instructions and/or data for the at least one processor.

A fourteenth aspect of an embodiment of the present application provides a communication system, where the communication system includes the first communication device of the third aspect and the second communication device of the fourth aspect, and/or the communication system includes the fifth aspect and/or, the communication system includes the first communication device of the sixth aspect and the second communication device of the seventh aspect.

Wherein, for the technical effect brought by any one of the design methods in the third aspect to the fourteenth aspect, reference may be made to the technical effects brought by the different design methods in the first aspect or the second aspect, which will not be repeated here.

Description of drawings

1 is a schematic diagram of an application scenario of an embodiment of the present application;

2 is another schematic diagram of an application scenario of an embodiment of the present application;

3 is a schematic diagram of a communication method provided by an embodiment of the present application;

FIG. 4-1 is a schematic diagram of a first communication device according to an embodiment of the present application;

4-2 is a schematic diagram of the effect achieved by a communication method provided by an embodiment of the present application;

4-3 is another schematic diagram of the effect achieved by a communication method provided by an embodiment of the present application;

FIG. 5-1 is another schematic diagram of a first communication device according to an embodiment of the present application;

FIG. 5-2 is another schematic diagram of a first communication apparatus according to an embodiment of the present application;

FIG. 6-1 is a schematic diagram of a second communication device according to an embodiment of the present application;

FIG. 6-2 is another schematic diagram of a second communication device according to an embodiment of the present application;

FIG. 7 is another schematic diagram of a communication device according to an embodiment of the present application;

FIG. 8 is another schematic diagram of a communication apparatus according to an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

First, some terms in the embodiments of the present application are explained to facilitate understanding by those skilled in the art.

(1) Terminal device: It can be a wireless terminal device that can receive scheduling and instruction information of network devices. The wireless terminal device can be a device that provides voice and/or data connectivity to users, or a handheld device with wireless connection function, or Other processing equipment connected to the wireless modem.

Terminal equipment can communicate with one or more core networks or the Internet via a radio access network (RAN), and the terminal equipment can be a mobile terminal equipment, such as a mobile phone (or "cellular" phone, mobile phone (mobile phone), computer and data cards, for example, may be portable, pocket-sized, hand-held, computer built-in or vehicle mounted mobile devices that exchange language and/or data with the radio access network. For example, personal communication service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), tablets Computer (Pad), computer with wireless transceiver function and other equipment. Wireless terminal equipment may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station (MS), a remote station, an access point ( access point (AP), remote terminal (remote terminal), access terminal (access terminal), user terminal (user terminal), user agent (user agent), subscriber station (SS), user terminal equipment (customer premises equipment, CPE), terminal (terminal), user equipment (user equipment, UE), mobile terminal (mobile terminal, MT), etc. The terminal device may also be a wearable device and a next-generation communication system, for example, a terminal device in a 5G communication system or a terminal device in a future evolved public land mobile network (PLMN).

(2) Network device: It can be a device in a wireless network. For example, a network device can be a radio access network (RAN) node (or device) that connects a terminal device to a wireless network, also known as a base station. . At present, some examples of RAN equipment are: generation Node B (gNodeB), transmission reception point (TRP), evolved Node B (evolved Node B, eNB), wireless network in the 5G communication system Controller (radio network controller, RNC), Node B (Node B, NB), base station controller (base station controller, BSC), base transceiver station (base transceiver station, BTS), home base station (for example, home evolved Node B , or home Node B, HNB), base band unit (base band unit, BBU), or wireless fidelity (wireless fidelity, Wi-Fi) access point (access point, AP), etc. In addition, in a network structure, the network device may include a centralized unit (centralized unit, CU) node, or a distributed unit (distributed unit, DU) node, or a RAN device including a CU node and a DU node.

Wherein, the network device can send configuration information to the terminal device (for example, carried in a scheduling message and/or an instruction message), and the terminal device further performs network configuration according to the configuration information, so that the network configuration between the network device and the terminal device is aligned; or , through the network configuration preset in the network device and the network configuration preset in the terminal device, the network configuration between the network device and the terminal device is aligned. Specifically, "alignment" refers to the determination of the carrier frequency for sending and receiving the interaction message, the determination of the type of the interaction message, the meaning of the field information carried in the interaction message, or the The understanding of other configurations of interactive messages is consistent.

In addition, in other possible cases, the network device may be other devices that provide wireless communication functions for the terminal device. The embodiments of the present application do not limit the specific technology and specific device form adopted by the network device. For convenience of description, the embodiments of the present application are not limited.

The network equipment may also include core network equipment, which includes, for example, an access and mobility management function (AMF), a user plane function (UPF), or a session management function (SMF) Wait.

In this embodiment of the present application, the apparatus for implementing the function of the network device may be the network device, or may be an apparatus capable of supporting the network device to implement the function, such as a chip system, and the apparatus may be installed in the network device. In the technical solutions provided by the embodiments of the present application, the technical solutions provided by the embodiments of the present application are described by taking the device for realizing the function of the network device being a network device as an example.

(3) The terms "system" and "network" in the embodiments of the present application may be used interchangeably. "At least one" means one or more, and "plurality" means two or more. "And/or", which describes the association relationship of the associated objects, means that there can be three kinds of relationships, for example, A and/or B, which can mean: the existence of A alone, the existence of A and B at the same time, and the existence of B alone, where A, B can be singular or plural. The character "/" generally indicates that the associated objects are an "or" relationship. "At least one item(s) below" or similar expressions thereof refer to any combination of these items, including any combination of single item(s) or plural items(s). For example "at least one of A, B and C" includes A, B, C, AB, AC, BC or ABC. And, unless otherwise specified, ordinal numbers such as “first” and “second” mentioned in the embodiments of the present application are used to distinguish multiple objects, and are not used to limit the order, sequence, priority or importance of multiple objects degree.

This application can be applied to a long term evolution (LTE) system, a new radio (NR) system, or a new wireless vehicle to everything (NR V2X) system; it can also be applied to LTE and 5G In hybrid networking systems; or device-to-device (D2D) communication systems, machine-to-machine (M2M) communication systems, Internet of Things (IoT), or unmanned or a communication system that supports multiple wireless technologies such as LTE technology and NR technology, etc.; or a non-terrestrial communication system, such as a satellite communication system, a high-altitude communication platform, etc. Alternatively, the communication system can also be applied to narrowband Internet of things (narrow band-internet of things, NB-IoT), enhanced data rate for GSM evolution (EDGE), broadband code division Multiple access system (wideband code division multiple access, WCDMA), code division multiple access 2000 system (code division multiple access, CDMA2000), time division synchronous code division multiple access system (time division-synchronization code division multiple access, TD-SCDMA), and future-oriented communication technologies. Or other communication systems, wherein the communication system includes a network device and a terminal device, the network device serves as a configuration information sending entity, and the terminal device serves as a configuration information receiving entity. Specifically, an entity in the communication system sends configuration information to another entity, and sends data to another entity, or receives data sent by another entity; another entity receives the configuration information, and sends the configuration information to the configuration information according to the configuration information. The entity sends data, or receives data sent by the configuration information sending entity. Wherein, the present application can be applied to a terminal device in a connected state or an active state (active), and can also be applied to a terminal device in an inactive state (inactive) or an idle state (idle).

Please refer to FIG. 1 , which is a schematic diagram of an application scenario provided by an embodiment of the present application. As shown in FIG. 1 , the configuration information sending entity may be a network device, and the configuration information receiving entity may be UE1-UE6. At this time, the base station and UE1-UE6 form a communication system. In the communication system, UE1-UE6 may To send uplink data to a network device, the network device needs to receive the uplink data sent by UE1-UE6. At the same time, the network device may send configuration information to UE1-UE6.

As shown in Figure 1, during the communication process, the sending device (or called the transmitting end, the transmitting end device) can be a network device, and the receiving device (or called the receiving end, the receiving end device) can be the terminal device; The device may be a terminal device, and the receiving device may be a network device; or, both the sending device and the receiving device may be network devices; or both the sending device and the receiving device may be terminal devices.

Taking the wireless communication process shown in FIG. 1 as an example, the communication modes can be classified based on the distance between the sending device and the receiving device. Exemplarily, a communication method with a communication distance within a few hundred meters (or tens of meters) is called short-distance communication, and a communication method with a communication distance greater than several hundred meters is called long-distance communication. Generally, in long-distance communication, the communication distance between the sending device and the receiving device is relatively long, and a lower frequency band signal can be used for communication. Diffraction is prone to occur, so it can propagate around buildings, so it can propagate over a long distance; while in short-range communication, the communication distance between the sending device and the receiving device is short, and higher-frequency band signals can be used for communication. , because the higher frequency band signal can provide a wider system bandwidth, and it is easy to achieve high-power transmission to improve the throughput rate.

As a typical application scenario in short-distance communication that requires high throughput rate, extended reality (XR) technology has developed rapidly in recent years. Compared with traditional communication scenarios, the ultimate XR experience often requires 10Gbps ( even tens of Gpbs) peak throughput. Among them, thanks to the high-quality user experience brought by the high peak throughput of XR, XR has a wide range of application prospects in fields such as entertainment, shopping, design, and medical care. Specifically, XR includes virtual reality (virtual reality, VR) technology, augmented reality (augmented reality, AR) or mixed reality (mixed reality, MR) and the like.

Exemplarily, please refer to FIG. 2 , which is a schematic diagram of an application scenario of XR in this embodiment of the present application, in which, by performing data interaction of wireless screen projection by two terminal devices, a mobile phone and a TV shown in FIG. 2 , multiple different XR applications, such as VR games. Among them, in the network structure of XR application, the indoor short-distance wireless transmission part has become the bottleneck of the whole system due to the reasons such as throughput limitation and unstable wireless link quality.

In addition, the high throughput rate of short-distance communication can also be applied to other application scenarios, such as realizing data encoding and decoding in application software (application, APP) in a mobile phone, large-capacity data transmission, and the like.

Obviously, it is easy to increase the power consumption of the transmitting device and the receiving device while improving the throughput rate. Therefore, how to realize a short-range wireless communication technology with low power consumption is an urgent technical problem to be solved.

At present, in the short-range communication scenario, the sending device and the receiving device generally send and receive data according to the communication standard, wherein the communication standard for the short-range communication is the wireless personal area network (wireless personal area network) in 802.11ad, 802.11ay and 802.15.3. area network, WPAN).

In 802.11ad and 802.11ay, the related design of medium access control (MAC) layer and physical layer applied to E-band (E-band) short-range communication system is specified. Its physical layer adopts orthogonal frequency division multiplexing (OFDM) or single carrier (SC) waveform, and SC waveform can use low dynamic range power amplifier (power amplifier) because of its low PAPR. amplifier, PA) to achieve low cost and low power consumption. In terms of channel coding, 802.11ad and 802.11ay use LDPC codes with a fixed code length (for example, the code length in 11ay is 1344), and the highest code rate is 7/8. However, the SC and OFDM waveforms in the 802.11ad and 802.11ay standards need to be generated using all different transmit chains, where the SC waveform uses a shaping filter to band-limit the single-carrier signal and then transmits it, while the OFDM waveform uses IFFT Processing performance Multiple orthogonal sub-carriers are transmitted. Therefore, in order to support the generation of two kinds of waveforms, the sending device needs to configure two sets of signal generation chains. At the same time, due to the use of LDPC codes, in order to ensure its performance, the maximum code rate is limited to 7/8.

In 802.15.3, its version 3c-2009 also provides a physical layer design applied to Eband, which also uses OFDM or SC waveforms, LDPC or CC codes. However, 802.15.3 is mainly used for communication between wearable devices, and its designed communication distance is less than 1 meter. In typical XR application scenarios (such as living rooms, conference rooms), the communication distance is often required to be several meters, so 802.15. 3 cannot meet this need.

It can be seen from the above that there are at least the following problems in the current short-range communication scenario: On the one hand, the sending device in the short-range communication scenario is required to have both SC and OFDM signal transmission and reception links, resulting in the cost of the sending device. On the other hand, the setting that only supports the highest 7/8 code rate has a great limitation on the throughput rate of the communication system, and cannot meet the communication requirements of applications such as XR.

To this end, the embodiments of the present application provide a communication method and apparatus, which are used to reduce the PAPR of a signal sent by a sending device by using an FDSS waveform processing method, and reduce the decoding power consumption of a receiving device by using a polar coding method, thereby reducing the power consumption of the receiving device. Improve communication energy efficiency.

Please refer to FIG. 3 , which is a schematic diagram of a communication method according to an embodiment of the present application. The method includes the following steps.

S101. The sending device performs FDSS processing on the first signal to obtain a second signal.

In this embodiment, the first communication device as the sending device performs FDSS processing on the first signal in step S101 to obtain a second signal after spectrum spread, where the first signal is obtained by polar coding according to a modulation and coding scheme Signal.

Specifically, the communication scenario between the first communication device serving as the sending device and the second communication device serving as the receiving device hereinafter may be short-range communication, wherein the operating frequency bands of different communication devices in the short-range communication scenario are located between 30 GHz and 300 GHz. In the meantime, this frequency band may also be called the millimeter wave frequency band, or the extremely high frequency (EHF) frequency band. Compared with the conventional communication scenarios that use lower frequency bands, the communication distance between the sending device and the receiving device in short-range communication is shorter, and higher frequency band signals can be used for communication. Wider system bandwidth and easy high-power transmission to improve throughput and meet high-throughput communication requirements.

In a possible implementation manner, in step S101, the first communication device serving as the sending device performs frequency domain spectrum shaping FDSS processing on the first signal, and the process of obtaining the second signal may specifically include: the first communication device The first signal is subjected to discrete Fourier transform (discrete fourier transform, DFT) processing to obtain a third signal; then, the first communication device performs filtering processing on the third signal to obtain the second signal. Specifically, the DFT processing is used to transform the time domain signal to obtain the frequency domain signal. In the process of performing the FDSS processing on the first signal, the transmitting device may first perform DFT processing on the first signal to obtain the third signal, and then perform the FDSS processing on the first signal. The third signal is filtered to obtain a spectrum-spreaded second signal.

In a possible implementation manner, the sampling rate of the baseband signal of the first communication apparatus serving as the sending device is a positive integer multiple of 30.72 MHz. Specifically, in order to support the normal operation of the first communication device in other communication systems (communication systems with a limited baseband signal sampling rate of 30.72 MHz, such as LTE or other communication systems), the baseband signal of the first communication device has a The sampling rate can be set to a positive integer multiple of 30.72MHz to improve the compatibility of the first communication device in different communication systems, and can also be flexibly configured according to the system bandwidth of the communication system to further improve communication energy efficiency.

Optionally, in order to support the communication of the first communication device in other communication systems, the sampling rate of the baseband signal of the first communication device may also adopt other values, for example, an integer multiple of 3.84MHz, an integer multiple of 15.36MHz, or Other values are not limited here.

In a possible implementation manner, the first signal is a signal obtained by performing polar coding according to a modulation and coding scheme, that is, the transmitting device performs polar coding on the bit information to be transmitted according to the modulation and coding scheme to obtain the first signal. Specifically, the modulation The modulation and coding scheme may contain a plurality of configuration information, and any one of the configuration information includes at least the code rate, wherein, when the code rate of the modulation and coding scheme includes 15/16, compared with the operating frequency band between 30 GHz and 30 GHz Other code rates (such as 1/2, 3/4, 7/8, etc.) commonly used in this scenario between 300GHz can be realized. Using a higher code rate can achieve a higher throughput rate to meet the needs of short-range wireless The demand for high throughput in communication technology.

It should be noted that the modulation and coding schemes mentioned in this embodiment and subsequent embodiments may be implemented in various forms such as text, tables, and schematic diagrams, which are not limited here. For example, when the modulation and coding scheme is implemented by a table, it may be a modulation and coding scheme (MCS) table.

In a possible implementation manner, the first signal is a signal obtained by performing polar code coding according to a modulation and coding scheme, that is, the transmitting device performs polar coding on the bit information to be sent according to the modulation and coding scheme to obtain the first signal. The modulation and coding scheme may include multiple pieces of configuration information, and any one of the configuration information includes at least a modulation mode, wherein, when the modulation mode of the modulation and coding scheme includes 8QAM, compared with the operating frequency band located at 30 GHz to 300 GHz Other modulation methods commonly used in this scenario (such as Quadrature Phase Shift Keying (QPSK) corresponding to low spectral efficiency to 16-order QAM corresponding to high spectral efficiency, etc.) to achieve, using 8QAM The modulation mode of the first communication device can make the spectral efficiency of the first communication device smoothly transition from the modulation mode of low spectral efficiency to the modulation mode of high spectral efficiency, and improve the throughput performance of the communication system.

S102. The sending device sends a target signal to the receiving device.

In this embodiment, after obtaining the second signal in step S101, the sending device sends a target signal to the receiving device in step S102, where the target signal is a signal obtained based on the second signal. Correspondingly, in step S102, the receiving device obtains the target signal from the sending device by means of data reception.

In a possible implementation manner, in step S101, the third signal obtained by performing DFT processing on the first signal may be a signal obtained by processing the first DFT points; in step S102, the target signal is based on the second DFT The number of points is a signal obtained by performing inverse discrete fourier transform (IDFT) processing on the second signal. The IDFT processing is used to transform the frequency domain signal to obtain a time domain signal, the third signal may be a signal obtained by performing DFT processing on the first signal based on the first DFT point, and the target signal may be based on the second DFT point. A signal obtained by performing IDFT processing on the second signal, wherein when the number of first DFT points is less than the number of second IDFT points, the second signal can be spectrum-spread, so as to obtain a target signal with lower PAPR after FDSS processing.

It should be noted that the target signal is a signal obtained by at least performing inverse Fourier transform IDFT processing on the second signal based on the number of second DFT points, and other processing procedures, such as adding a cyclic prefix (CP), may also be performed. ), parallel-serial conversion (P/S), or other processing processes, which are not limited here. In addition, as a special implementation form of IDFT, inverse fast fourier transform (IFFT) is a fast algorithm for implementing IDFT, and the above IDFT processing process can also be implemented through the IFFT processing process.

Specifically, there may be a mathematically limited relationship between the number of first DFT points used to perform DFT processing on the first signal and the number of second points used to perform IDFT processing on the second signal, for example, the number of first DFT points and the number of DFT points The numerical ratio of the second DFT points is 2 to 3, or the numerical ratio of the first DFT points to the second DFT points is 4 to 5, or other mathematical relationships, which are not specifically limited here.

When the numerical ratio of the number of the first DFT points to the number of the second DFT points is 2 to 3, it can be concluded that the alpha value of the filter (filter) used to implement the filtering process can be up to 0.5. The alpha value of the filter is used to limit the design of the filter. For example, when a root raised cosine filter is used, the alpha value is its roll-off factor. According to the alpha value, the filter design required by the sending device can be easily guided. device. Optionally, when the numerical ratio of the first DFT points to the second DFT points is 2 to 3, the value of the first DFT points may be 512, and the value of the second DFT points may be 768; or, the first DFT points may be 512. The value may be 1024, and the value of the second DFT points may be 1536; or other value combinations, which are not limited here.

Similarly, when the numerical ratio of the number of the first DFT points to the number of the second DFT points is 4 to 5, it can be concluded that the alpha value of the filter used to implement the filtering process can be up to 0.25. Optionally, when the numerical ratio of the first DFT points to the second DFT points is 4 to 5, the value of the first DFT points may be 512, and the value of the second DFT points may be 640; or, the first DFT points may be 512. The value may be 1024, and the value of the second DFT points may be 1280; or other value combinations, which are not limited here.

In a possible implementation manner, the subcarrier interval of the target signal sent by the sending device in step S102 is a positive integer multiple of 1.6 MHz or a positive integer multiple of 1.92 MHz. Wherein, the first communication device as the sending device can flexibly select the subcarrier spacing according to different communication scenarios when sending the target signal. For example, when the system phase noise is relatively large, a larger subcarrier spacing can be used to improve the response to the phase noise. When the multipath interference is strong, a smaller subcarrier spacing can be used to increase the CP length, thereby reducing inter-symbol interference and inter-carrier interference, and improving communication energy efficiency.

In a possible implementation manner, the target signal sent by the sending device in step S102 further includes a cyclic prefix CP, and the time length of the CP includes at least one of the following: 26.04 ns, 104.16 ns, 52.08 ns, and 208.32 ns.

Wherein, the first communication device as the sending device can flexibly select the time length of the CP according to different communication scenarios when sending the target signal. For example, when the transmission volume of the data service is large, a smaller CP length can be used to increase the data portion Bandwidth; when multipath interference is strong, a larger CP length can be used to reduce inter-symbol interference and inter-carrier interference to improve communication energy efficiency.

4-1 is used as an example of implementation of the sending device, wherein the sending device can specifically process the bit information through the modules shown in FIG. 4-1 to obtain a sending signal for wireless transmission. It should be noted that each module shown in FIG. 4-1 can be implemented by hardware in the sending device or by software simulation, which is not limited here. In addition, the implementation process of step S101 and step S102 can be implemented based on the sending device shown in Fig. 4-1. It should be noted that in the implementation process of the solution, the sending device shown in Fig. 4-1 can be implemented according to the conventional technology in the communication field. Modules included in the device are added or deleted, and the sending device shown in Figure 4-1 is only used as an exemplary implementation.

The processing flow of Figure 4-1 will be described below through a specific example. The specific processing flow may include:

Step 1. The bit information to be sent is processed by the Polar encoding module to obtain the encoded signal, and input to the Modulation module;

Step 2. The coded signal is processed by the modulation module to obtain a modulated time-domain symbol (symbol), and the modulated time-domain symbol is input to the serial-to-parallel conversion (S/P) module;

Step 3. The modulated time domain symbol and the phase tracking reference signal (phase tracking reference signal, PTRS) are processed by the S/P module to obtain the first signal corresponding to step S101;

Step 4. use the first signal as the input of the DFT module, after obtaining the third signal, use the third signal as the input of the filter (Filter) module, obtain the second signal, to realize the FDSS processing process in step S101; Among them, through the FDSS processing, the signal PAPR finally generated by the transmitter can be lower, and the cost and power consumption of the PA can be reduced.

Step 5. Use the second signal as the input of the IFFT module, and then add the CP (add CP) module, the parallel-serial conversion (P/S) module and the digital-to-analog converter (DAC) in turn to obtain the output result. ) module to obtain the target signal, and send the target signal corresponding to step S102, so that the receiving device obtains the target signal.

Specifically, according to the implementation process of steps 1 to 5, compared with the implementation process of using LDPC code as channel coding, due to the limitation of LDPC code structure, it is generally impossible to achieve a very high code rate; at the same time, the decoding of LDPC code The power consumption is also relatively high, which is not suitable for low-power systems. Therefore, the first signal is obtained using the Polar code as the channel coding scheme, and a code rate setting including at least 15/16 is used. Therefore, the decoder using the Polar code can complete the decoding with lower power consumption than the LDPC code decoder, and at the same time, the use of the extremely high code rate of 15/16 improves the peak throughput of the system. In addition, through the FDSS processing, the signal PAPR finally generated and sent by the sending device can be lower, and the cost and power consumption of the PA can be reduced.

In addition, in various possible implementation manners of step 101 and step 102, various possible designs of the parameter set (numerology) of the transmitting device are provided, which specifically include the baseband sampling rate of the transmitting device, the number of DFT points, the transmitted target The subcarrier spacing of the signal, the time length of the CP used by the transmitted target signal, the filter alpha value, etc. Further, it can be known from the description of the aforementioned step S101 that the first signal is a signal obtained by performing polar code encoding according to the modulation and coding scheme, that is, the first signal can be obtained through the processing procedures of the aforementioned steps 1 to 3, specifically in step 1. During the encoding process, as mentioned above, the transmitting device may perform the polar encoding process in the polar encoding (Polar encoding) module according to the MCS table.

In the following, various possible designs of the relevant numerology, as well as the MCS table, will be described in the form of a table. It should be noted that the multiple tables (Table 1 to Table 10) shown below are only an implementation example. During the implementation of the solution, any number of tables from the multiple tables can be merged to obtain a new table, or , split any table in multiple tables to obtain a new table, or split and merge any number of tables in multiple tables to obtain a new table, or split the data in multiple tables with other represented in the form of text, pictures, etc., which are not specifically limited here.

See Table 1 for one possible numerology design in the sending device.

参数名称parameter name	取值value
基带采样率Baseband sample rate	2.4576GHz2.4576GHz
系统带宽system bandwidth	2.5GHz2.5GHz
IFFT点数IFFT points	768768
子载波间隔subcarrier spacing	3.2MHz3.2MHz
数据子载波数Number of data subcarriers	480480
总子载波数Total number of subcarriers	512512
PTRS子载波数Number of PTRS subcarriers	3232
采样间隔sampling interval	0.407ns0.407ns
数据符号长度data symbol length	312.5ns312.5ns
CP点数CP points	64/25664/256
CP长度CP length	26.04/104.16ns26.04/104.16ns
滤波器alpha取值filter alpha value	<＝0.5<=0.5

Table 1

Table 1 presents a possible numerology design that takes into account the special needs of many systems and hardware implementations:

1. The baseband sampling rate of 2.4576GHz is a commonly used hardware device parameter;

2. The values of DFT points 512 and IFFT points 768 meet the low-complexity hardware implementation requirements of DFT/IFFT;

3. The sub-carrier spacing is large at 3.2MHz, which is enough to resist the harmful effects of high-frequency system phase noise to a certain extent;

4. The filter alpha value is used to limit the design of the filter. For example, when a root raised cosine filter is used, alpha is its roll-off factor, and the required filter can be conveniently designed according to the value less than 0.5.

It can be seen from Table 1 that each symbol of the system contains 480 data sub-carriers, and when the code length of channel coding is designed to be an integer multiple of 480, joint demodulation and decoding can be performed on the integer number of symbols to improve the receiver. Hardware processing efficiency. Therefore, this scheme uses a Polar code with a code length of 960, and can perform rate matching on a Polar code mother code with a length of 1024 to obtain a Polar code word with a code length of 960. The code rate is {1/2, 5/8, 3/4, 13/16, 7/8, 15/16} and other 6 kinds. A possible MCS table design is shown in Table 2.

Table 2

table 3

In the numerology design given in the embodiments shown in Tables 1 to 3, the filter alpha can reach 0.5, so when the system bandwidth is 2.5GHz, the actual data bandwidth is only 1.64GHz (ie 512*3.2MHz), and the system spectrum less efficient. To this end, the present embodiment provides a numerical design with high system spectral efficiency, as shown in Table 4, and still uses the commonly used baseband sampling rate, that is, 2.4576 GHz. The filter alpha value can be up to 0.25, and the bandwidth of the data part is 1.966GHz (ie 512*3.84MHz).

参数名称parameter name	取值value
基带采样率Baseband sample rate	2.4576GHz2.4576GHz
系统带宽system bandwidth	2.5GHz2.5GHz
IFFT点数IFFT points	640640
子载波间隔subcarrier spacing	3.84MHz3.84MHz
数据子载波数Number of data subcarriers	480480
总子载波数Total number of subcarriers	512512
PTRS子载波数Number of PTRS subcarriers	3232
采样间隔sampling interval	0.407ns0.407ns
数据符号长度data symbol length	260.4ns260.4ns
CP点数CP points	64/25664/256
CP长度CP length	26.04/104.16ns26.04/104.16ns
滤波器alpha取值filter alpha value	<＝0.25<=0.25

Table 4

In the same way, when using the MCS design shown in Table 2 and the numerology shown in Table 4, the throughput of the system is shown in Table 5, that is, under the 2.5GHz system bandwidth, dual-stream transmission, MCS11-15 at short CP and long CP The current MCS15 can achieve a system throughput of more than 10Gbps (that is, the peak throughput required for the ultimate XR experience).

table 5

Considering that the wireless communication system described in this application is mainly used in a high-throughput scenario, and at the same time, in order to obtain a finer MCS adjustment granularity, this embodiment provides another possible MCS table design, as shown in Table 6. Compared with Table 2, the implementation example of Table 6 has the following differences:

1. Reduce BPSK low bit rate entries, because high throughput systems may not need these relatively inefficient MCS schemes;

2. Increase the 8QAM table entry to make the efficiency between 1.875 and 3 more refined.

Table 6

To support services with different rate requirements, the numerology described in this embodiment may be selected according to the actual system bandwidth. The design principle of the numerology corresponding to different system bandwidths is to keep the length of the symbol unchanged and increase or decrease the number of subcarriers. Tables 7 and 8 show the corresponding designs of the numerologies described in Tables 1 and 4 under the system bandwidths of 2.5GHz, 5GHz, 7.5GHz, and 10GHz, respectively.

系统带宽system bandwidth	2.52.5	55	7.57.5	1010
采样率Sampling Rate	2.45762.4576	4.91524.9152	7.37287.3728	9.83049.8304
子载波间隔subcarrier spacing	3.23.2	3.23.2	3.23.2	3.23.2
采样间隔sampling interval	0.4070.407	0.2030.203	0.1360.136	0.1020.102
IFFT点数IFFT points	768768	15361536	23042304	30723072
CP点数CP points	64/25664/256	128/512128/512	192/768192/768	256/1024256/1024
数据符号长data symbol length	260.4260.4	260.4260.4	260.4260.4	260.4260.4
CP长度(ns)CP length (ns)	26.04/104.1626.04/104.16	26.04/104.1626.04/104.16	26.04/104.1626.04/104.16	26.04/104.1626.04/104.16
数据子载波data subcarrier	480480	960960	14401440	19201920
PTRS子载波PTRS subcarrier	3232	6464	9696	128128
数据部分带data section	1.641.64	3.283.28	4.924.92	6.566.56

Table 7

系统带宽system bandwidth	2.52.5	55	7.57.5	1010
采样率Sampling Rate	2.45762.4576	4.91524.9152	7.37287.3728	9.83049.8304
子载波间隔subcarrier spacing	3.843.84	3.843.84	3.843.84	3.843.84
采样间隔sampling interval	0.4070.407	0.2030.203	0.1360.136	0.1020.102
IFFT点数IFFT points	640640	12801280	19201920	25602560
CP点数CP points	64/25664/256	128/512128/512	192/768192/768	256/1024256/1024
数据符号长data symbol length	260.4260.4	260.4260.4	260.4260.4	260.4260.4
CP长度(ns)CP length (ns)	26.04/104.1626.04/104.16	26.04/104.1626.04/104.16	26.04/104.1626.04/104.16	26.04/104.1626.04/104.16
数据子载波data subcarrier	480480	960960	14401440	19201920
PTRS子载波PTRS subcarrier	3232	6464	9696	128128
数据部分带data section	1.9661.966	3.9323.932	5.8985.898	7.8647.864

Table 8

It can be seen from Table 7 and Table 8 that under different system bandwidths, the data symbol length and CP length are fixed.

In the numerology provided by the embodiments shown in Table 1 to Table 8, the CP length has two configurations: 26.04ns and 104.16ns. When the channel delay extension in the actual application scenario exceeds 104.16ns, due to the insufficient CP length, the CP length will be introduced. Inter-symbol interference and inter-carrier interference lead to the degradation of system performance. At this time, the subcarrier spacing can be adjusted to make the CP length longer to counteract the longer channel delay extension. The specific implementation is shown in Table 9 and Table 10.

系统带宽(GHz)System bandwidth (GHz)	2.52.5
采样率(GHz)Sampling rate (GHz)	2.45762.4576
子载波间隔(MHz)Subcarrier spacing (MHz)	1.61.6
采样间隔(ns)Sampling interval (ns)	0.4070.407
IFFT点数IFFT points	15361536
CP点数CP points	128/512128/512
数据符号长度data symbol length	520.8520.8
CP长度(ns)CP length (ns)	52.08/208.3252.08/208.32

数据子载波数Number of data subcarriers	960960
PTRS子载波数Number of PTRS subcarriers	6464
数据部分带宽data part bandwidth	1.641.64

Table 9

系统带宽(GHz)System bandwidth (GHz)	2.52.5
采样率(GHz)Sampling rate (GHz)	2.45762.4576
子载波间隔(MHz)Subcarrier spacing (MHz)	1.921.92
采样间隔(ns)Sampling interval (ns)	0.4070.407
IFFT点数IFFT points	12801280
CP点数CP points	128/512128/512
数据符号长度data symbol length	520.8520.8
CP长度(ns)CP length (ns)	52.08/208.3252.08/208.32
数据子载波数Number of data subcarriers	960960
PTRS子载波数Number of PTRS subcarriers	6464
数据部分带宽data part bandwidth	1.9661.966

Table 10

It can be seen from Table 9 and Table 10 that by reducing the subcarrier spacing, the CP length can be extended to 52.08ns and 208.32ns, so it can resist longer channel delay spread. Considering the influence of the phase offset in the high-frequency system on the system, the subcarrier spacing should not be too small. Therefore, the preferred solution is to use a subcarrier spacing that is a multiple of 1.6MHz or a multiple of 1.92MHz, that is, the subcarrier spacing is not less than 1.6 MHz or 1.92MHz. The highest resistant channel delay spread is 52.08ns (short CP) and 208.32ns (long CP).

Based on a variety of possible implementation schemes in Tables 1 to 10, a variety of numerology design parameter tables are provided, wherein different designs of numerology are flexibly configured according to the principle that the symbol length is unchanged, and a corresponding parameter configuration table is obtained; In addition, to meet different delay expansion requirements, the sub-carrier spacing in various numerology design parameter tables is adjusted, and the sub-carrier spacing of 1.6MHz or a multiple of 1.92MHz is used; further, the channel coding scheme based on Polar code and the highest code The design of the MCS meter with a rate of 15/16, including the use of 8QAM modulation, improves the efficiency and smoothness of the MCS meter entry.

As an implementation example, based on the implementation solutions in the foregoing Tables 1 to 10, schematic diagrams of the effects of the two signal simulations shown in Figure 4-2 and Figure 4-3 are now provided. See Figure 4-2 for an example of PAPR performance based on the complementary cumulative distribution function (ccdf). In Figure 4-2, the abscissa value is PAPR, and the unit is dB; the ordinate value is probability; obviously, under the same ordinate value, the PAPR of FDSS is lower than that of the traditional discrete Fourier transform Transform-spread-orthogonal frequency division multiplexing (discrete Fourier transform-spread-orthogonal frequency division multiplexing, DFT-S-OFDM) scheme. Refer to Figure 4-3 for an example of block error rate performance in an additive white Gaussian noise (AWGN) channel scenario where the modulation method is QPSK. In Figure 4-3, the abscissa is the symbol signal-to-noise ratio (Es/N0), in dB; the ordinate is the block error ratio (BLER); the code length of the Polar code is 960, The number of information bits are {480, 600, 720, 780, 840, 900}, respectively, that is, the corresponding code rates are {1/2, 5/8, 3/4, 13/16, 7/8, 15/16}, using simplified serial cancellation (simplified serial cancellation). successive cancellation, SSC) decoder; LDPC adopts the 802.11ay standard LDPC code design, the code length is 1344, and the number of information bits is {672, 840, 1008, 1092, 1176}, that is, the corresponding code rates are {1/2, 5/8, 3/4, 13/16, 7/8}, using layered offset min-sum (LOMS) decoder 3 iterations (LOMS(3)) for decoding. It can be seen that to achieve the same block error rate, the signal-to-noise ratio required by the Polar code is lower than that of the LDPC code, that is, Polar has better block error rate performance.

Specifically, the following technical effects can be obtained from the above technical solutions. The use of the FDSS waveform to reduce the PAPR of the transmitted signal can reduce the cost and power consumption of the transmitter; the variable system bandwidth supports a variety of services at different rates; the variable subcarrier spacing, It can resist channel delay expansion of different lengths; Polar code is used as the channel coding scheme to reduce decoding power consumption and improve system performance (as shown in Figure 4-3, the Polar code used in this scheme and the LDPC code used by LDPC ay BLER performance comparison ); and, the MCS table adopts the design of the highest bit rate 15/16 and/or 8QAM, which improves the highest throughput of the system and supports finer adjustment of system efficiency.

S103. The receiving device performs FDSS inverse processing on the fourth signal to obtain a fifth signal.

In this embodiment, after receiving the target signal in step S102, the second communication device serving as the receiving device determines a fourth signal according to the target signal, and performs FDSS inverse processing on the fourth signal in step S103 to obtain the ground No signal, wherein the fifth signal is used for polar decoding according to the modulation and coding scheme.

It should be noted that the target signal is used to determine the fourth signal, which may specifically refer to that the second communication device serving as the receiving device may determine the fourth signal through the target signal in step S103, and the specific determination process may be to perform at least the target signal. The signal obtained by DFT processing may also undergo other processing procedures, such as serial-to-parallel conversion (S/P), removal of cyclic prefix (CP), or other processing procedures, which are not limited here.

In a possible implementation manner, the second communication device as the receiving device performs FDSS inverse processing on the fourth signal in step S103, and the process of obtaining the fifth signal may specifically include: the second communication device as the receiving device firstly Filter processing is performed on the fourth signal to obtain a sixth signal; then, the second communication device performs IDFT processing on the sixth signal to obtain the fifth signal. Wherein, after obtaining the target signal, the second communication device as the receiving device can implement different FDSS inverse processing according to different filters in the second communication device. Wherein, when the target signal from the sending device is filtered using a root-raised cosine (RRC) filter, the receiving device needs to perform filtering in the process of inversely processing the fourth signal determined by the target signal. , and perform IDFT processing after filtering to obtain the fifth signal, wherein the IDFT processing is used to transform the frequency-domain signal to obtain a time-domain signal, so that the fifth signal can obtain corresponding bit information through symbol demodulation subsequently.

In a possible implementation manner, the second communication device as the receiving device performs FDSS inverse processing on the fourth signal in step S103, and the process of obtaining the fifth signal may specifically include: the second communication device performs the fourth signal on the fourth signal. The IDFT process is performed to obtain the fifth signal. Wherein, after obtaining the target signal, the second communication device as the receiving device can implement different FDSS inverse processing according to different filters in the second communication device. Wherein, when the target signal from the sending device is filtered using a raised cosine (RC) filter, the receiving device may not need to perform filtering in the process of inversely processing the fourth signal determined by the target signal, That is, the fourth signal is directly subjected to IDFT processing to obtain the fifth signal, wherein the IDFT processing is used to transform the frequency domain signal to obtain a time domain signal, so that the fifth signal can be subsequently demodulated through symbols to obtain corresponding bit information .

In a possible implementation manner, the fifth signal obtained by the second communication device as the receiving device in step S103 may be a signal obtained by processing based on the first DFT points, and the fourth signal determined based on the target signal is based on The second DFT point number is a signal obtained by performing DFT processing on the target signal. Specifically, the fifth signal may be a time domain signal obtained by performing IDFT processing on the sixth signal based on the first DFT point number and used for polar decoding according to the modulation and coding scheme. In addition, the DFT processing is used to transform the time-domain signal to obtain a frequency-domain signal, that is, the fourth signal may be a frequency-domain signal obtained by performing DFT processing on the target signal based on the number of second DFT points.

In a possible implementation manner, the numerical ratio of the first DFT point number to the second DFT point number is 2 to 3. Wherein, since the numerical ratio of the number of the first DFT points to the number of the second DFT points is 2 to 3, it can be concluded that the alpha value of the filter used to implement the filtering processing can be up to 0.5. The alpha value of the filter is used to limit the design of the filter. For example, when a root raised cosine filter is used, the alpha value is its roll-off factor. According to the alpha value, the filter design required by the sending device can be easily guided. device.

In a possible implementation manner, the numerical ratio of the first DFT points to the second DFT points is 4 to 5. Wherein, since the numerical ratio of the number of the first DFT points to the number of the second DFT points is 4 to 5, it can be concluded that the alpha value of the filter used for the filtering process is 0.25. The alpha value of the filter is used to limit the design of the filter. For example, when a root raised cosine filter is used, the alpha value is its roll-off factor. According to the alpha value, the filter design required by the sending device can be easily guided. device.

In a possible implementation manner, the sampling rate of the baseband signal of the second communication device is a positive integer multiple of 30.72 MHz. Wherein, in order to support the normal operation of the second communication device in other communication systems (communication systems with a limited baseband signal sampling rate of 30.72MHz), the baseband signal sampling rate of the second communication device may be set to a positive value of 30.72MHz. Integer times, in order to improve the compatibility of the second communication device in different communication systems, and it can also be flexibly configured according to the system bandwidth of the communication system, so as to further improve the communication energy efficiency.

It should be noted that the sampling rate of the baseband signal of the second communication device is a positive integer multiple of 30.72 MHz. For example, when the system bandwidth is 2.5 GHz, the value of the positive integer multiple may be 8, that is, 2.4576 GHz; or Yes, when the system bandwidth is 5.0GHz, the value of the positive integer multiple can be 16, that is, 4.9152GHz; or, when the system bandwidth is 7.5GHz, the value of the positive integer multiple can be 24, that is, 7.3728GHz ; Or, when the system bandwidth is 10.0 GHz, the value of the positive integer multiple can be 32, that is, 9.8304 GHz; or other values, which are not limited here. That is, different multiples of positive integer multiples of 30.72 MHz are selected in different system bandwidths, so that on the premise of improving the compatibility of the second communication device in different communication systems, the spectrum utilization of the communication system where the second communication device is located is improved. Rate.

Specifically, the fifth signal obtained by the second communication device as the receiving device in step S103 is used for polar decoding according to the modulation and coding scheme, that is, the receiving device can perform polar coding on the fifth signal according to the modulation and coding scheme to obtain Corresponding bit information, specifically, the modulation and coding scheme may include multiple pieces of configuration information, and any item of configuration information includes at least a code rate, wherein, when the code rate of the modulation and coding scheme includes 15/16, compared with the Other code rates (such as 1/2, 3/4, 7/8, etc.) commonly used in the scenario where the working frequency band is between 30 GHz and 300 GHz can be realized, and higher throughput can be achieved by using a higher code rate rate to meet the high throughput demands in short-range wireless communication technology.

In addition, the fifth signal obtained by the second communication device as the receiving device in step S103 is used for polar decoding according to the modulation and coding scheme, that is, the receiving device performs polar coding on the fifth signal according to the modulation and coding scheme to obtain the corresponding Bit information, specifically, the modulation and coding scheme may include multiple pieces of configuration information, and any item of configuration information includes at least a modulation mode, wherein, when the modulation mode of the modulation and coding scheme includes 8QAM, compared with the operating frequency band located at 30. Other modulation methods commonly used in the scenario between gigahertz GHz and 300 GHz (such as Quadrature Phase Shift Keying (QPSK) corresponding to low spectral efficiency to 16-order QAM corresponding to high spectral efficiency corresponding to a large span, etc. ) implementation, using the 8QAM modulation method can make the spectral efficiency of the second communication device smoothly transition from the modulation method of low spectral efficiency to the modulation method of high spectral efficiency, and improve the throughput performance of the communication system.

Specifically, the receiving device processes the received target signal in step S103 to obtain a fifth signal, and can obtain bit information based on the fifth signal. For the implementation process, refer to the foregoing steps S101 and S102, the sending device The inverse of the process of processing information to obtain and send the target signal.

Exemplarily, the processing process of the receiving device may refer to the inverse process of the modular description process for the transmitting device with reference to the aforementioned FIG. 4-1, that is, the receiving device may also be provided with multiple processing modules similar to those shown in FIG. The target signal passes through the DAC module, the parallel-serial conversion (P/S) module, the CP removal module, the IFFT module, the filter module, the DFT module, the S/P module, the modulation (Modulation) module, and the polar code decoding in turn. modules etc.

It should be noted that, in the processing process of the sending device shown in Figure 4-1, the information bits are processed to obtain the first signal, the possible third signal, the second signal, and the target signal in turn; in the corresponding inverse process, that is, During the processing of the receiving device, the target signal is processed to obtain a fourth signal, a possible sixth signal, a fifth signal, and information bits in sequence. Whether the processing module is implemented by a hardware module or by a simulation of a software module, due to the different physical characteristics of the equipment and the loss of transmission on the channel, it is easy to cause a certain loss or distortion of the signal and not be completely consistent. That is, the first signal in the transmitting device and the fifth signal in the receiving device may not be exactly the same. Similarly, the third signal in the transmitting device and the sixth signal in the receiving device may not be exactly the same. The second signal and the fourth signal in the receiving device may not be exactly the same, but it is generally believed that the difference between the information bits in the transmitting device and the information bits in the receiving device can be determined by the receiving device (and/or the transmitting device). ) and eliminate it to a certain extent, so that the data that the sending device intends to send can be completely and accurately received by the receiving device.

In addition, in the process of processing the target signal by the receiving device, reference may also be made to various possible designs of the numerology related to Table 1 to Table 10 described in step S102 and the description of the MCS table, which will not be repeated here.

In this embodiment, the sending device performs FDSS processing on the first signal obtained by encoding the Polar code according to the modulation and coding scheme to obtain the second signal, and sends the target signal obtained based on the second signal to the receiving device. Wherein, in this communication method, on the one hand, the second signal is obtained by using FDSS waveform processing, which can reduce the PAPR of the target signal sent by the sending device, thereby reducing the cost and power consumption of the transmitter; on the other hand, using polar coding coding Compared with the traditional low density parity code (low density parity code, LDPC) encoding method, the high power consumption in the decoding process can reduce the decoding power consumption of the receiving device of the target signal , to improve communication energy efficiency.

Referring to FIG. 5-1, an embodiment of the present application provides a first communication apparatus 500, and the first communication apparatus 500 can implement the function of the sending device in the above method embodiment, and thus can also implement the above method embodiment. beneficial effect. In this embodiment of the present application, the first communication apparatus 500 may be a sending device, or may be an integrated circuit or an element inside the sending device, such as a chip.

Wherein, the working frequency band of the first communication device 500 is between 30GHz and 300GHz, and the device 500 includes:

a processing unit 501, configured to perform FDSS processing on the first signal to obtain a second signal, where the first signal is a signal obtained by polar coding according to a modulation and coding scheme;

The transceiver unit 502 is configured to send a target signal, where the target signal is a signal obtained based on the second signal.

In a possible implementation manner, the processing unit 501 is specifically used for:

The third signal is filtered to obtain the second signal.

In a possible implementation manner, the third signal is a signal obtained by processing based on the number of first DFT points, and the target signal is a signal obtained by performing IDFT processing on the second signal based on the number of second DFT points.

In a possible implementation manner, the numerical ratio of the first DFT point number to the second DFT point number is 2 to 3.

In a possible implementation manner, the numerical ratio of the first DFT points to the second DFT points is 4 to 5.

In a possible implementation manner, the sampling rate of the baseband signal of the first communication device 500 is a positive integer multiple of 30.72 MHz.

In one possible implementation,

The code rate of the modulation and coding scheme includes at least 15/16.

In one possible implementation,

In a possible implementation manner, the subcarrier spacing of the target signal is a positive integer multiple of 1.6 MHz or a positive integer multiple of 1.92 MHz.

In a possible implementation manner, the target signal further includes a cyclic prefix CP, and the time length of the CP includes at least one of the following:

26.04ns ns, 104.16ns, 52.08ns, 208.32ns.

It should be noted that, for details such as the information execution process of the units of the first communication device 500, reference may be made to the descriptions in the method embodiments shown in the foregoing application, and details are not repeated here.

Please refer to FIG. 5-2 , which is another schematic structural diagram of the first communication device 500 provided by the present application. The first communication device 500 includes a logic circuit 503 and an input and output interface 504 . The first communication device 500 may be a chip or an integrated circuit.

The transceiver unit 501 shown in FIG. 5-1 may be a communication interface, and the communication interface may be the input/output interface 504 shown in FIG. 5-2 , and the input/output interface 504 may include an input interface and an output interface. Alternatively, the communication interface may also be a transceiver circuit, and the transceiver circuit may include an input interface circuit and an output interface circuit. In addition, the processing unit 502 shown in FIG. 5-1 may be the logic circuit 503 shown in FIG. 5-2 .

Specifically, the logic circuit 503 is used to perform FDSS processing on the first signal to obtain a second signal, the first signal is a signal obtained by polar coding according to the modulation and coding scheme; the input and output interface 504 is used to send the target signal, the The target signal is a signal obtained based on the second signal.

In a possible implementation manner, the logic circuit 503 may also perform other steps performed by the aforementioned processing unit 502 and achieve corresponding beneficial effects, and the input/output interface 504 may also perform other steps performed by the aforementioned transceiver unit 501 and achieve corresponding beneficial effects. The effect will not be repeated here.

In a possible implementation manner, the logic circuit 503 may be a processing device, and the functions of the processing device may be partially or completely implemented by software. The functions of the processing device may be partially or completely implemented by software.

Optionally, the processing device may include a memory and a processor, wherein the memory is used to store a computer program, and the processor reads and executes the computer program stored in the memory to perform corresponding processing and/or steps in any one of the method embodiments. .

Alternatively, the processing means may comprise only a processor. The memory for storing the computer program is located outside the processing device, and the processor is connected to the memory through a circuit/wire to read and execute the computer program stored in the memory. The memory and the processor may be integrated together, or may be physically independent of each other.

Alternatively, the processing means may be one or more chips, or one or more integrated circuits. For example, the processing device may be one or more field-programmable gate array (FPGA), application specific integrated circuit (ASIC), system on chip (SoC), central processing unit (central processor unit, CPU), network processor (network processor, NP), digital signal processing circuit (digital signal processor, DSP), microcontroller (micro controller unit, MCU), programmable logic device (programmable logic device, PLD) or other integrated chips, or any combination of the above chips or processors, etc.

Referring to FIG. 6-1, an embodiment of the present application provides a second communication apparatus 600, and the second communication apparatus 600 can implement the function of the receiving device in the above method embodiment, and thus can also implement the above method embodiment. beneficial effect. In this embodiment of the present application, the second communication apparatus 600 may be a receiving device, or may be an integrated circuit or an element inside the receiving device, such as a chip.

Wherein, the working frequency band of the second communication device 600 is between 30GHz and 300GHz, and the device 600 includes:

a transceiver unit 601 for acquiring a target signal, where the target signal is used to determine a fourth signal;

The processing unit 602 is configured to perform FDSS inverse processing on the fourth signal to obtain a fifth signal, where the fifth signal is used for polar decoding according to the modulation and coding scheme.

In a possible implementation manner, the processing unit 601 is specifically used for:

filtering the fourth signal to obtain a sixth signal;

The sixth signal is subjected to IDFT processing to obtain the fifth signal.

The fourth signal is subjected to IDFT processing to obtain the fifth signal.

In a possible implementation manner, the fifth signal is a signal obtained by processing based on the first DFT point number, and the fourth signal is a signal obtained by performing DFT processing on the target signal with the second DFT point number.

In a possible implementation manner, the sampling rate of the baseband signal of the second communication device 600 is a positive integer multiple of 30.72 MHz.

In one possible implementation,

The code rate of the modulation and coding scheme includes at least 15/16.

In one possible implementation,

26.04ns ns, 104.16ns, 52.08ns, 208.32ns.

It should be noted that, for details such as the information execution process of the units of the second communication device 600, reference may be made to the descriptions in the method embodiments shown in the foregoing application, and details are not repeated here.

Please refer to FIG. 6-2 , which is another schematic structural diagram of the second communication apparatus 600 provided by the present application. The second communication apparatus 600 includes a logic circuit 603 and an input/output interface 604 . The second communication device 600 may be a chip or an integrated circuit.

The transceiver unit 601 shown in FIG. 6-1 may be a communication interface, and the communication interface may be the input/output interface 604 shown in FIG. 6-2 , and the input/output interface 604 may include an input interface and an output interface. Alternatively, the communication interface may also be a transceiver circuit, and the transceiver circuit may include an input interface circuit and an output interface circuit. In addition, the processing unit 602 shown in FIG. 6-1 may be the logic circuit 603 shown in FIG. 6-2 .

Specifically, the input and output interface 604 is used to obtain a target signal, and the target signal is used to determine the fourth signal; the logic circuit 603 is used to perform FDSS inverse processing on the fourth signal to obtain a fifth signal, and the fifth signal is used for Polar decoding is performed according to the modulation and coding scheme.

In a possible implementation manner, the logic circuit 603 may also perform other steps performed by the aforementioned processing unit 602 and achieve corresponding beneficial effects, and the input/output interface 604 may also perform other steps performed by the aforementioned transceiver unit 601 and achieve corresponding beneficial effects. The effect will not be repeated here.

In a possible implementation manner, the logic circuit 603 may be a processing device, and the functions of the processing device may be partially or completely implemented by software. The functions of the processing device may be partially or completely implemented by software.

Referring to FIG. 7 , a communication apparatus 700 involved in the above-mentioned embodiments is provided for an embodiment of the present application. Specifically, the communication apparatus 700 may be a first communication apparatus serving as a sending device or a first communication apparatus serving as a receiving device in the above-mentioned embodiments. Two communication apparatuses, the example shown in FIG. 7 is that the sending device or the receiving device is implemented by a terminal device (or a component in the terminal device). Wherein, a schematic diagram of a possible logical structure of the communication apparatus 700 may include, but is not limited to, at least one processor 701 and a communication port 702 . Further optionally, the apparatus may further include at least one of a memory 703 and a bus 704 . In this embodiment of the present application, the at least one processor 701 is configured to control and process the actions of the communication apparatus 700 .

Furthermore, the processor 701 may be a central processing unit, a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, transistor logic device, hardware component, or any combination thereof. It may implement or execute the various exemplary logical blocks, modules and circuits described in connection with this disclosure. The processor may also be a combination that implements computing functions, such as a combination comprising one or more microprocessors, a combination of a digital signal processor and a microprocessor, and the like. Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiments, which will not be repeated here.

It should be noted that the communication device 700 shown in FIG. 7 can be specifically used to implement the steps implemented by the sending device or the receiving device in the foregoing method embodiments, and realize the technical effects corresponding to the sending device or the receiving device. The communication device shown in FIG. 7 For the specific implementation manner, reference may be made to the descriptions in the foregoing method embodiments, which will not be repeated here.

Please refer to FIG. 8 , which is a schematic structural diagram of the communication apparatus 800 involved in the above-mentioned embodiments provided by the embodiments of the present application. The communication apparatus 800 may specifically be the first communication apparatus as the sending device in the above-mentioned embodiment or the first communication apparatus as the receiving device in the above-mentioned embodiment. The second communication device of the device, as shown in FIG. 8 , is implemented by the sending device or the receiving device through a network device (or a component in the network device). For the structure of the communication device, reference may be made to the structure shown in FIG. 8 .

The communication device 800 includes at least one processor 811 and at least one network interface 814 . Further optionally, the communication device further includes at least one memory 812 , at least one transceiver 813 and one or more antennas 815 . The processor 811, the memory 812, the transceiver 813 and the network interface 814 are connected, for example, through a bus. In this embodiment of the application, the connection may include various interfaces, transmission lines, or buses, which are not limited in this embodiment. . Antenna 815 is connected to transceiver 813 . The network interface 814 is used to enable the communication device to communicate with other communication devices through the communication link. For example, the network interface 814 may include a network interface between a communication apparatus and core network equipment, such as an S1 interface, and the network interface may include a network interface between a communication apparatus and other communication apparatuses (eg, other network equipment or core network equipment), such as X2 Or Xn interface.

The processor 811 is mainly used to process communication protocols and communication data, control the entire communication device, execute software programs, and process data of the software programs, for example, to support the communication device to perform the actions described in the embodiments. The communication device may include a baseband processor and a central processing unit. The baseband processor is mainly used to process communication protocols and communication data. The central processing unit is mainly used to control the entire terminal equipment, execute software programs, and process data of software programs. The processor 811 in FIG. 8 may integrate the functions of the baseband processor and the central processing unit. Those skilled in the art can understand that the baseband processor and the central processing unit may also be independent processors, interconnected by technologies such as a bus. Those skilled in the art can understand that a terminal device may include multiple baseband processors to adapt to different network standards, a terminal device may include multiple central processors to enhance its processing capability, and various components of the terminal device may be connected through various buses. The baseband processor may also be expressed as a baseband processing circuit or a baseband processing chip. The central processing unit can also be expressed as a central processing circuit or a central processing chip. The function of processing the communication protocol and communication data may be built in the processor, or may be stored in the memory in the form of a software program, and the processor executes the software program to realize the baseband processing function.

The memory is mainly used to store software programs and data. The memory 812 may exist independently and be connected to the processor 811 . Optionally, the memory 812 may be integrated with the processor 811, for example, in one chip. The memory 812 can store program codes for implementing the technical solutions of the embodiments of the present application, and is controlled and executed by the processor 811 .

Figure 8 shows only one memory and one processor. In an actual terminal device, there may be multiple processors and multiple memories. The memory may also be referred to as a storage medium or a storage device or the like. The memory may be a storage element on the same chip as the processor, that is, an on-chip storage element, or an independent storage element, which is not limited in this embodiment of the present application.

The transceiver 813 may be used to support the reception or transmission of radio frequency signals between the communication device and the terminal, and the transceiver 813 may be connected to the antenna 815 . The transceiver 813 includes a transmitter Tx and a receiver Rx. Specifically, one or more antennas 815 may receive radio frequency signals, and the receiver Rx of the transceiver 813 is configured to receive the radio frequency signals from the antennas, convert the radio frequency signals into digital baseband signals or digital intermediate frequency signals, and convert the digital The baseband signal or the digital intermediate frequency signal is provided to the processor 811, so that the processor 811 performs further processing on the digital baseband signal or the digital intermediate frequency signal, such as demodulation processing and decoding processing. In addition, the transmitter Tx in the transceiver 813 is also used to receive the modulated digital baseband signal or digital intermediate frequency signal from the processor 811, convert the modulated digital baseband signal or digital intermediate frequency signal into a radio frequency signal, and pass a The radio frequency signals are transmitted by the antenna or antennas 815 . Specifically, the receiver Rx can selectively perform one or more stages of down-mixing processing and analog-to-digital conversion processing on the radio frequency signal to obtain a digital baseband signal or a digital intermediate frequency signal. The order of precedence is adjustable. The transmitter Tx can selectively perform one or more stages of up-mixing processing and digital-to-analog conversion processing on the modulated digital baseband signal or digital intermediate frequency signal to obtain a radio frequency signal, and the up-mixing processing and digital-to-analog conversion processing The sequence of s is adjustable. Digital baseband signals and digital intermediate frequency signals can be collectively referred to as digital signals.

The transceiver 813 may also be referred to as a transceiver unit, a transceiver, a transceiver, or the like. Optionally, the device used to implement the receiving function in the transceiver unit may be regarded as a receiving unit, and the device used to implement the transmitting function in the transceiver unit may be regarded as a transmitting unit, that is, the transceiver unit includes a receiving unit and a transmitting unit, and the receiving unit also It can be called a receiver, an input port, a receiving circuit, etc., and the sending unit can be called a transmitter, a transmitter, or a transmitting circuit, etc.

It should be noted that the communication apparatus 800 shown in FIG. 8 can be specifically used to implement the steps implemented by the sending device or the receiving device in the foregoing method embodiments, and realize the technical effects corresponding to the sending device or the receiving device. The communication device shown in FIG. 8 For the specific implementation of 800, reference may be made to the descriptions in the foregoing method embodiments, which will not be repeated here.

Embodiments of the present application also provide a computer-readable storage medium that stores one or more computer-executable instructions. When the computer-executable instructions are executed by a processor, the processor executes as described in the possible implementations of the terminal device in the foregoing embodiments. method, that is, the sending device in the foregoing method embodiments.

Embodiments of the present application also provide a computer-readable storage medium that stores one or more computer-executable instructions. When the computer-executable instructions are executed by a processor, the processor executes as described in the possible implementations of the network device in the foregoing embodiments. method, that is, the receiving device in the foregoing method embodiments.

Embodiments of the present application also provide a computer program product (or computer program) that stores one or more computers. When the computer program product is executed by the processor, the processor executes the method for possible implementations of the above-mentioned terminal device, that is, The sending device in the foregoing method embodiments.

Embodiments of the present application further provide a computer program product that stores one or more computers. When the computer program product is executed by the processor, the processor executes the method for possible implementations of the foregoing network device, that is, the method received in the foregoing method embodiment equipment.

An embodiment of the present application further provides a chip system, where the chip system includes at least one processor, configured to support the first communication apparatus to implement the functions involved in the possible implementation manners of the first communication apparatus. Optionally, the chip system further includes an interface circuit, and the interface circuit provides program instructions and/or data for the at least one processor. In a possible design, the chip system may further include a memory for storing necessary program instructions and data of the first communication device. The chip system may be composed of chips, or may include chips and other discrete devices, wherein the first communication apparatus may specifically be the sending device in the foregoing method embodiments.

An embodiment of the present application further provides a chip system, where the chip system includes at least one processor, configured to support the second communication apparatus to implement the functions involved in the possible implementation manners of the second communication apparatus. Optionally, the chip system further includes an interface circuit, and the interface circuit provides program instructions and/or data for the at least one processor. In a possible design, the chip system may further include a memory for storing necessary program instructions and data of the second communication device. The chip system may be composed of chips, or may include chips and other discrete devices, wherein the second communication device may specifically be the receiving device in the foregoing method embodiments.

An embodiment of the present application further provides a communication system, and the network system architecture includes the terminal device and the network device in any of the foregoing embodiments, that is, the sending device and the receiving device in the foregoing method embodiments.

In the several embodiments provided in this application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit. The above-mentioned integrated units may be implemented in the form of hardware, or may be implemented in the form of software functional units. The integrated unit, if implemented in the form of a software functional unit and sold or used as an independent product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solutions of the present application can be embodied in the form of software products in essence, or the parts that contribute to the prior art, or all or part of the technical solutions, and the computer software products are stored in a storage medium , including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, Read-Only Memory (ROM, Read-Only Memory), Random Access Memory (RAM, Random Access Memory), magnetic disk or optical disk and other media that can store program codes .

Claims

A communication method, characterized in that it is applied to a first communication device, wherein the working frequency band of the first communication device is between 30 GHz and 300 GHz, and the method includes:

The first communication device performs frequency domain spectrum shaping FDSS processing on the first signal to obtain a second signal, where the first signal is a signal obtained by polar coding according to a modulation and coding scheme;

The first communication device transmits a target signal, where the target signal is a signal obtained based on the second signal.
The method according to claim 1, wherein the first communication device performs frequency domain spectrum shaping FDSS processing on the first signal, and obtaining the second signal comprises:

The first communication device performs discrete Fourier transform DFT processing on the first signal to obtain a third signal;

The first communication device performs filtering processing on the third signal to obtain the second signal.
The method according to claim 2, wherein the third signal is a signal obtained by processing based on a first DFT point number, and the target signal is a discrete Fourier transform of the second signal based on a second DFT point number Inversely transform the signal obtained by IDFT processing.
A first communication device, characterized in that the operating frequency band of the first communication device is between 30 GHz and 300 GHz, and the device includes:

a processing unit, configured to perform FDSS processing on the first signal to obtain a second signal, where the first signal is a signal obtained by polar coding according to a modulation and coding scheme;

A transceiver unit, configured to send a target signal, where the target signal is a signal obtained based on the second signal.
The device according to claim 4, wherein the processing unit is specifically configured to:

Performing discrete Fourier transform DFT processing on the first signal to obtain a third signal;

The third signal is filtered to obtain the second signal.
The device according to claim 5, wherein the third signal is a signal obtained by processing based on the first DFT points, and the target signal is obtained by performing IDFT processing on the second signal based on the second DFT points. Signal.
A communication method, characterized in that it is applied to a second communication device, wherein the operating frequency band of the second communication device is between 30 GHz and 300 GHz, and the method includes:

the second communication device acquires a target signal, and the target signal is used to determine a fourth signal;

The second communication device performs FDSS inverse processing on the fourth signal to obtain a fifth signal, where the fifth signal is used for polar decoding according to a modulation and coding scheme.
The method according to claim 7, wherein the second communication device performs FDSS inverse processing on the fourth signal, and obtaining the fifth signal comprises:

The second communication device performs filtering processing on the fourth signal to obtain a sixth signal;

The second communication device performs IDFT processing on the sixth signal to obtain the fifth signal.
The method according to claim 7, wherein the second communication device performs FDSS inverse processing on the fourth signal, and obtaining the fifth signal comprises:

The second communication device performs IDFT processing on the fourth signal to obtain the fifth signal.
The method according to claim 8 or 9, wherein the fifth signal is a signal obtained by processing a first DFT point number, and the fourth signal is a DFT process performed on the target signal based on a second DFT point number obtained signal.
A second communication device, characterized in that the operating frequency band of the second communication device is between 30 GHz and 300 GHz, and the device includes:

a transceiver unit, configured to acquire a target signal, where the target signal is used to determine a fourth signal;

a processing unit, configured to perform FDSS inverse processing on the fourth signal to obtain a fifth signal, where the fifth signal is used for polar decoding according to a modulation and coding scheme.
The apparatus according to claim 11, wherein the processing unit is specifically configured to:

filtering the fourth signal to obtain a sixth signal;

IDFT processing is performed on the sixth signal to obtain the fifth signal.
The apparatus according to claim 11, wherein the processing unit is specifically configured to:

The second communication device performs IDFT processing on the fourth signal to obtain the fifth signal.
The apparatus according to claim 12 or 13, wherein the fifth signal is a signal obtained by processing the first DFT point number, and the fourth signal is a second DFT point number obtained by performing DFT processing on the target signal signal of.
The method or apparatus according to claim 3, 6, 10 or 14, wherein the numerical ratio of the first DFT points to the second DFT points is 2 to 3.
The method or apparatus according to claim 3, 6, 10 or 14, wherein the numerical ratio of the first DFT points to the second DFT points is 4 to 5.
The method or device according to any one of claims 1 to 16, wherein the sampling rate of the baseband signal of the device is a positive integer multiple of 30.72 MHz.
The method or device according to any one of claims 1 to 17, wherein,

The code rate of the modulation and coding scheme includes at least 15/16.
The method or device according to any one of claims 1 to 18, wherein,

The modulation mode of the modulation and coding scheme includes at least 8th-order quadrature amplitude modulation.
The method or apparatus according to any one of claims 1 to 19, wherein the subcarrier spacing of the target signal is a positive integer multiple of 1.6 MHz or a positive integer multiple of 1.92 MHz.
The method or apparatus according to any one of claims 1 to 20, wherein the target signal further includes a cyclic prefix CP, and a time length of the CP includes at least one of the following:

26.04ns ns, 104.16ns, 52.08ns, 208.32ns.
A communication device comprising at least one processor coupled to a memory,

the memory is used to store programs or instructions;

The at least one processor is adapted to execute the program or instructions to cause the apparatus to implement the method of any one of claims 1 to 3, 7 to 10 and 15 to 21.
A first communication device, comprising at least one logic circuit and an input and output interface;

The input and output interface is used for outputting the target signal;

The logic circuit is used to perform the method of any of claims 1 to 3 and 15 to 21 .
A second communication device, comprising at least one logic circuit and an input and output interface;

The input and output interface is used for inputting target signals;

The logic circuit is used to perform the method of any of claims 7 to 10 and 15 to 21 .
A computer-readable storage medium, characterized in that the medium stores instructions, and when the instructions are executed by a computer, the method described in any one of claims 1 to 3, 7 to 10, and 15 to 21 is implemented .
A computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of any one of claims 1 to 3, 7 to 10 and 15 to 21.